Assignment: (-3a+7)²
Answer (2)
Answer:To simplify , you can use the square of a binomial formula:(x + y)^2 = x^2 + 2xy + y^2Here, and :(-3a + 7)^2 = (-3a)^2 + 2(-3a)(7) + 7^2Now calculate each term:So the simplified expression is:\boxed{9a^2 - 42a + 49}
Answer:Solution:(-3a)²+2(3a)(7)+7²=3a²+42a+49
